Indon dun consider themselves as Malay
Javanese are very wary of malay nationalism.
They had all malay sultanates in sumatra and their entire relatives butchered in 1947. That includes top civil servants and land owners. It got so bad malays quickly identified themselves as bataks or some other minorities.
It's only now malays are starting to emerge in Indonesia by displaying their cultural identity such as dressing, rebuilding demolished palaces, speaking malay like in jiu hu and not like Jakarta dialect etc.